Within six hours General Carmona had rallied a regiment to his
support, marched through the streets of Lisbon to the Dictator's
residence, arrested him, locked him up in the suburban Belem Palace.

With General da Costa under lock and key, General Carmona declared
himself Dictator, Premier, and Minister of War. "I deposed General da
Costa," he explained to pressmen, "because he conducted himself in a
manner not only arbitrary but impolite."